I'm liking your photoblog...
On The North Block and Garden of Lights you seem to have exposed the photos well for the lighting, but you've lost a lot of building detail in the darker areas.
I'm a relative noob, especially to pp, but here's something I've been practising recently which may help you:
I'd recommend a bit of pp-ing to change things. If you've got Photoshop or Elements you can select the areas that need lifing and adjust the levels - not so much that it looks artificial, but at least so that it brings our a bit more detail. Have a google and see what you can find on levels in photoshop...
Here are a couple of photos to illustrate - no great photographs but it should illustrate what can be done fairly easily:
Here the underlighting on the bridge caused the background buildings on the right to be very underexposed:
On this version, the buildings were selected and levels have been adjusted to brighten things up a little.